A New Species of the Genus Amakusanthura (Crustacea: Isopoda: Anthuridae) Collected from Yuya Bay, on the Sea of Japan Side of Yamaguchi Prefecture, Western JapanA New Species of the Genus Amakusanthura (Crustacea: Isopoda: Anthuridae) Collected from Yuya Bay, on the Sea of Japan Side of Yamaguchi Prefecture, Western JapanAA11430153山口県日本海側の油谷湾から発見されたヒゲナガウミナナフシ属(甲殻類、等脚目、ウミナナフシ科)の1新種

A new species of the genus Amakusanthura azumai (Crustacea: Isopoda: Anthuridae) is described based on a number of specimens collected from Yuya Bay, on the Sea of Japan side of Yamaguchi Prefecture in western Honshu. The present new species is most closely allied to Amakusanthura longiantennata Nunomura, 1977. The former is differentiated from the latter by the following characteristics: in the rounded medial process and the antero-lateral process of cephalon, the rounded tip of the masculina of the second male pleopod, less numerous teeth on the maxillula, shorter maxillipeds, a wider propodus on the pereopdl, a lack of dorsal pits on the dorsal surface of the pereonal somites, and less numerous setae on the pereopods.